Difference in arterial FDG accumulation in healthy study participants between digital PET/CT and standard PET/CT

Difference in arterial FDG accumulation in healthy study participants between digital PET/CT and standard PET/CT

Objective To evaluate the differences in FDG accumulation in arteries throughout the body between digital and standard PET/CT. Methods Forty-six people who had FDG-PET examinations with a digital PET/CT scanner for health screening between April 2020 and March 2021 and had previous examinations with...

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Bibliographic Details
Published in:Annals of nuclear medicine Vol. 38; no. 2; pp. 96 - 102
Main Authors: Nitta, Noriko, Yoshimatsu, Rika, Iwasa, Hitomi, Nakaji, Kousuke, Miyatake, Kana, Nishimori, Miki, Matsumoto, Tomohiro, Yamanishi, Tomoaki, Yamagami, Takuji
Format: Journal Article
Language:English
Published: Singapore Springer Nature Singapore 01-02-2024
Springer Nature B.V
Subjects:
Accumulation
Aorta
Arteries
Carotid arteries
Carotid artery
Computed tomography
Evaluation
Femoral artery
Femur
Imaging
Liver
Medical screening
Medicine
Medicine & Public Health
Nuclear Medicine
Original Article
Positron emission tomography
Radiology
Scanners
Segments
Veins & arteries
Digital PET/CT
18F-FDG
SiPM
Artery
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Summary:Objective To evaluate the differences in FDG accumulation in arteries throughout the body between digital and standard PET/CT. Methods Forty-six people who had FDG-PET examinations with a digital PET/CT scanner for health screening between April 2020 and March 2021 and had previous examinations with a standard PET/CT scanner were the study participants. FDG accumulation in arteries throughout the body was visually assessed in each segment. Scan was considered positive when arterial FDG accumulation was equal to or greater than that of the liver. The positivity rates for general arteries and each arterial segment were compared between the two kinds of scanners. If any one of the arterial segments was considered positive, the general arteries were classified as positive. Moreover, the rate of change in results from the standard PET/CT to the digital scanner in the same individual (negative to positive, positive to negative) was examined. Results In the evaluation of general arteries, the positivity rates were 21.7% (10 cases) for the standard PET/CT, whereas positive rates were 97.8% (45 cases) for the digital PET/CT ( p  < 0.001). In all arterial segments, the positivity rate was significantly higher with the digital PET/CT compared to the standard PET/CT; those with the digital PET/CT were, respectively, 95.7%, 87.0%, 73.9%, 37.0%, 34.8%, and 21.7% in the femoral, brachial, aortic, subclavian, iliac, and carotid arteries. On the other hand, those with the standard PET/CT were 13.0%, 13.0%, 19.6%, 2.2%, 0%, and 4.4% in segments in the above order. Changes from negative to positive were shown in many cases; 35 cases (76.0%) of general arteries, 38 cases (82.6%) for the femoral artery, and 34 cases (73.9%) for the brachial artery. The exception was one case in which a change from positive to negative was confirmed in the carotid artery. In all arteries considered to be positive, FDG accumulation was not greater than but was equal to that in the liver with both scanners. Conclusions Arterial FDG accumulation was significantly higher with digital PET/CT compared to conventional PET/CT. With digital PET/CT, an arterial FDG accumulation equal to the liver may not to be considered as abnormal accumulation.
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ISSN:0914-7187
1864-6433
DOI:10.1007/s12149-023-01875-4